Front-end react based app.
I initialized a git repo to github, used git a . to add everything, git commit -m "", then git push to push everything to my repo.
Then I used heroku create to create a heroku app which worked
However, when I try to push it all to heroku app with git push heroku master I get this error: error: failed to push some refs to 'https://git.heroku.com/todo-bja.git'
I've done this process before without any errors so am I missing something? (Using a webpack that includes Procile and everything needed.)